Spherical roller bearings with double row of rollers, the outer ring has a common spherical roller, the inner ring has two raceways and inclined relative to the bearing axis into an angle. This clever structure makes it has self-aligning performance, and therefore less susceptible to shaft and bearing box angle on the error or the impact of shaft bending, suitable for installation error or shaft deflection caused by angular error occasions. The bearing in addition to withstand radial load, but also to withstand the two-way axial load.